CMS 12GB (3X4GB) DDR3 10600 1333MHZ ECC Registered DIMM Memory Ram Upgrade Compatible with HP/Compaq® Workstation Z600 C2 Seires Only Ddr3 Ecc Reg for Server Only - C20 at Amazon.com
G.SKILL Ripjaws Series 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model (F3-12800CL9D-8GBRL) at Amazon.com
Kingston Value (KVR16N11/8) RAM 8 GB 1600MHz DDR3 (PC3-12800) Non-ECC CL11 240 Pin DIMM Motherboard Memory at Amazon.com
SAMSUNG 8GB DDR3 SO-DIMM Memory Module at Amazon.com
12GB (1 x 4GB + 1 x 8GB) PC14900 DDR3 1866MHz SO-DIMMs 204-Pin Memory Upgrade Compatible with 2015 (Late) iMac 27" w/ Retina 5K Models and PCs (OWC1867DDR3S12S) at Amazon.com
Amazon.com: OWC 12.0GB (3X 4GB) DDR3 ECC PC10600 1333MHz SDRAM ECC Compatible with Mac Pro (OWC1333D3W4M12K) : Everything Else
G.Skill Ripjaws X Series 16 GB (2 x 8 GB) 240-Pin SDRAM (PC3-12800) DDR3 1600 CL10-10-10-30 1.50V Dual Channel Desktop Memory Model F3-12800CL10D-16GBXL at Amazon.com